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Anhui Liwei Chemical Co., Limited.

Cigarette Adhesive JZ-I Low-Viscosity VAE Emulsion for Cigarette Adhesives

    • Product Name: Cigarette Adhesive JZ-I Low-Viscosity VAE Emulsion for Cigarette Adhesives
    • Factroy Site: Lingwu, Yinchuan, Ningxia, China
    • Price Inquiry: sales2@liwei-chem.com
    • Manufacturer: Anhui Liwei Chemical Co., Limited.
    • CONTACT NOW
    Specifications
    HS Code 927152
    Appearance Milky white liquid without visible impurity
    Solid Content 55.0 ± 1.0%
    Viscosity Brookfield 25 C 800–1500 mPa·s
    Ph 5.0–7.0
    Particle Size 0.5–2.0 μm
    Glass Transition Temperature -5 to 5°C
    Minimum Film Forming Temperature 0–5°C
    Residual Vinyl Acetate Content ≤0.5%
    Density 25 C 1.05–1.10 g/cm³
    Adhesion To Paper Excellent, high fiber tear
    Water Resistance Good, with moderate water tolerance
    Mechanical Stability Stable under high shear conditions

    As an accredited Cigarette Adhesive JZ-I Low-Viscosity VAE Emulsion for Cigarette Adhesives factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing Cigarette Adhesive JZ-I is packaged in 200 kg plastic-lined drums, tightly sealed to prevent contamination and moisture loss.
    Container Loading (20′ FCL) 20′ FCL: drums/IBCs on pallets, secured and sealed in one 20-foot container, ensuring safe, efficient transport.
    Shipping Shipped in sealed plastic drums or IBC totes to prevent leakage and contamination. Store at 5–30°C, avoiding freezing and direct sunlight. Classified as non-hazardous for transport, but handle with standard PPE and spill-containment measures. Ensure containers are properly labeled and secured during transit to maintain product stability and safety.
    Storage Store in a clean, tightly sealed container away from direct sunlight, heat sources, and open flames. Keep in a cool, dry, well-ventilated area at 5–35°C; avoid freezing. Stir before use if separation occurs. Use within the recommended shelf life to maintain viscosity and bonding performance.
    Shelf Life Typically 6 months from manufacture when stored sealed in original containers at recommended temperatures, avoiding freezing and direct sunlight.
    Application of Cigarette Adhesive JZ-I Low-Viscosity VAE Emulsion for Cigarette Adhesives

    In side seam bonding on Hauni PROTOS-M8 cigarette makers running at 12,000–14,000 rods/min, the adhesive film is transferred from a laser-engraved ceramic anilox roller onto a 20–25 µm thick cigarette paper edge within a nip clearance of 15–25 µm. Under these conditions, the emulsion undergoes shear rates exceeding 10⁶ s⁻¹, requiring a low-shear viscosity of 600–800 mPa·s (Brookfield DV-II+, spindle #3, 20 rpm, 22°C) and a high-shear viscosity below 50 mPa·s to avoid misting and inadequate transfer. JZ-I low-viscosity VAE emulsion, compounded at 78–82 wt% with a hydrogenated rosin ester dispersion (8–10 wt%), triacetin plasticiser (4–5 wt%), and a benzisothiazolinone biocide (0.05 wt%), yields a rheology profile characterised by a power-law index n ≈ 0.65 and a yield stress of 2.8 Pa, as determined by Anton Paar MCR 302 oscillatory stress sweep at 1 Hz. This ensures consistent pick-up on the gravure cells and immediate transfer to the paper substrate, even when the roller temperature fluctuates between 32°C and 38°C due to frictional heating. The wet adhesive weight is controlled at 3.2–4.5 mg per cigarette; excess will cause seam burning delays and visible scorch lines during smoking, while under-application below 2.8 mg results in burst seams under thermal stress, as verified by the CORESTA Recommended Method No. 87 burst tension test (acceptance threshold: ≥11.5 N). The side seam must maintain integrity through the burn line to avoid fiddly formation of a non-conical coal, a defect monitored by automated optical inspection systems on the maker. Compliance is established under U.S. FDA 21 CFR 175.105 for indirect food contact adhesives and the German TabakerzV Annex 2 positive list; residual vinyl acetate monomer is routinely below 50 mg/kg as analysed by headspace GC per modified BfR XXXVI/1 conditions. The finished article is a standard king-size cigarette with a sealed longitudinal seam.

    Filter rod seam bonding on a Hauni KDF-5 filter maker operating at 500 m/min delivers a cellulose acetate tow band that has been plasticised with 6–8 wt% triacetin (of tow weight). The seam adhesive is applied to the inner edge of the plug wrap paper just ahead of the forming horn. A critical failure mode arises when the plasticizer migrates from the tow into the adhesive layer, causing post-production softening and seam slippage during subsequent cutting and feeding. JZ-I emulsion is formulated at 84–89 wt% with a styrene-acrylic copolymer dispersion (5–8 wt%), a zinc ammonium carbonate crosslinking agent (0.15–0.25 wt%, added as a 10% solution), and defoamer. The crosslinking reaction proceeds during the drying zone at 130–160°C, yielding a film with a glass transition temperature (Tg) increased from 5°C to 28°C (DMA, 1 Hz, 3°C/min) and a triacetin uptake of less than 3 wt% after 7 days at 40°C, measured by weight gain on free films per modified ASTM D570-22. Application weight is 2.5–3.8 g/m² (dry), sustained by a siphon-fed needle nozzle with an orifice of 0.20 mm; any deviation above 4.2 g/m² can cause excessive wet-out that blocks paper porosity, compromising the filter ventilation required for ISO tar assays. Compliance references BfR Recommendation XIV (plastics in contact with dry foodstuffs), applied here to plasticiser-containing tow, and the adhesive must not contain substances listed in the European Food Safety Authority (EFSA) candidate list for tobacco product additives. The resulting continuous filter rod is cut into 108 mm six-up segments and later combined with tobacco rods.

    JZ-I Dosage Ranges and Operating Parameters per Bonding Stage
    ApplicationJZ-I Emulsion Dosage (wt% of wet formula)Wet Film Weight / CoatingEquipment / SpeedCore Compliance Reference
    Side seam bonding78–823.2–4.5 mg/cigHauni PROTOS-M8 at 12,000–14,000 rods/min21 CFR 175.105, TabakerzV Annex 2, CORESTA No. 87
    Filter rod seam84–892.5–3.8 g/m²Hauni KDF-5 at 500 m/minBfR XIV, 21 CFR 176.170
    Tipping paper68–742–4 mm bead (~10 g/m² wet)Hauni MAX-S at 700 m/minCoE Res AP (2005)2, DIN V 53160-1, 2014/40/EU
    Inner liner lamination52–58 dry wt%4.5–6.0 g/m² dryCombi-laminator 300 m/min / G.D Packmatic21 CFR 176.170, BfR XXXVI, ASTM F904
    Carton closing92–959–12 g/m²BDT gumer 160 packs/min21 CFR 176.170, EN 12960

    Can a Tipping Adhesive Achieve Instantaneous Tack at 700 Metres Per Minute While Preserving Paper Porosity?

    The assembly of a filter cigarette in the Hauni MAX-S tipping unit involves wrapping a 22–26 mm wide tipping paper strip around the junction of a tobacco rod and a pre-cut filter segment, with the adhesive applied as a 2–4 mm wide bead along the inner edge. Line speeds of 650–750 m/min reduce the bead open time to 0.08–0.15 seconds before it contacts the tobacco rod surface, necessitating a wet tack that instantaneously exceeds 80 g/cm (modified FINAT FTM-9 probe test with cigarette paper). JZ-I low-viscosity emulsion is blended at 68–74 wt% with a low-viscosity partially hydrolysed polyvinyl alcohol solution (8–11 wt% of 88–92% hydrolysis degree, providing high hydrogen-bonding capacity) and a food-grade sucrose acetate isobutyrate plasticiser (1.5–2.5 wt%). This combination avoids surfactants that could lower dynamic surface tension below 42 mN/m and cause feathering on low-Cobb cigarette papers. The tack development curve, monitored on a proprietary drum tack simulator at 25°C/50% RH, shows a peak of 120 g/cm within 0.1 s and a maintenance above 60 g/cm for 0.5 s. Organoleptic neutrality is verified by the Council of Europe Resolution AP (2005) 2 protocol for mouth contact materials, with sensory evaluation against a control panel and permissible total non-volatile migration below 10 mg/dm² in a DIN V 53160-1:2002 saliva simulant at 37°C/24 h. The final pressure belt applies 1.2–1.6 bar to consolidate the bond before the rotary cutting drum separates individual cigarettes. Tipping adhesive films must also resist heat dissipation from the burn line; thermo-mechanical analysis (TMA) on cured films indicates no softening below 85°C. Conformity to EU Tobacco Products Directive 2014/40/EU Article 5 regarding non-aversive non-addictive additives is supported by the absence of prohibited substances in the polymerisation recipe. The finished output is an assembled filter cigarette with a mechanically sound, tasteless joint.

    Inner Liner Foil Lamination: Adhesion Dynamics and Heat-Seal Durability on High-Production Embossing Lines

    Soft pack cigarette inner liners consisting of 6.35–7.0 µm aluminium foil bonded to 32–38 g/m² unbleached kraft paper are produced on combi-laminators running at 250–350 m/min. The adhesive is applied via reverse gravure at a line pressure of 1.5–2.2 bar onto the aluminium foil, dried in a 18-metre recirculating hot-air oven with a peak temperature of 145°C, and immediately laminated to the paper under a heated pressure roller at 90–110°C. JZ-I emulsion is compounded at 52–58 dry wt% with a carboxylated styrene-butadiene latex (28–33 dry wt%, providing film elongation above 400%) and a mineral oil-free defoamer; the mixture exhibits a Brookfield viscosity of 150–300 mPa·s at 25°C to ensure smooth gravure pick-up and avoid ribbing on the applicator roll. Target dry coat weight is 4.5–6.0 g/m²; a lower weight under 3.5 g/m² leads to micro-cracking of the foil layer during subsequent embossing on a G.D Packmatic line operating at 200–220°C flat dies. Laminates are tested for heat-seal integrity after 0.5 s dwell at 130°C and 2 bar pressure, achieving a T-peel strength ≥220 g/15 mm per ASTM F904-98 and folding endurance at ≥1,000 cycles under ISO 5626:1993. Compliance for materials in indirect contact with tobacco is covered under U.S. FDA 21 CFR 176.170 and BfR Recommendation XXXVI (paper and board for food contact), with specific migration limits for formaldehyde and metaldehyde set at nondetectable levels using LOD 0.5 µg/dm². The final laminated liner reels are slit and palletised for supply to cigarette packaging machines.

    Carton closing on BDT/Körber and Bradman Lake race-track gummers at 140–180 packs/min applies a fine line of adhesive to the dust flaps and side seams of folding cartons. JZ-I emulsion is fed directly from a 200 litre IBC to the pump-fed nozzles without additional dilution, representing 92–95 wt% of the as-used product; the remaining fraction is an isothiazolinone preservative system. Viscosity at the nozzle is maintained at 800 ±150 mPa·s (Brookfield #4, 20 rpm) to prevent dripping during idle stops while ensuring consistent nozzle cut-off. The adhesive forms a wet bond weight of 9–12 g/m² and must yield fibre tear (> 95% fibre) on 280–320 g/m² solid bleached sulphate within <2 seconds of compression, verified by the TAPPI T 456 procedure at 23°C/50% RH. Compliance: 21 CFR 176.170 and EN 12960:2001 for packaging adhesives; no volatile organic solvents or plasticisers are present. The output is a sealed carton of 200 cigarettes ready for overwrapping.

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    Certification & Compliance
    More Introduction
    An aqueous vinyl acetate-ethylene (VAE) emulsion formulated for low-viscosity delivery, designated Cigarette Adhesive JZ-I, is engineered for high-speed cigarette assembly operations where glue pot stability, minimal stringing, and rapid wet tack are non-negotiable. With a Brookfield LVF viscosity of 250–450 mPa·s at 25 °C (Spindle 2, 30 rpm, ASTM D1084-16 Method A), the product reduces pump cavitation and starved-roller defects observed with higher-viscosity homopolymer PVAc grades. Solids content is maintained at 52.0 ± 1.0 % (ISO 3251:2019, 2 h at 105 °C), delivering sufficient film-forming mass per unit area without exceeding the drying capacity of modern KDF2 or Protos tipping lines running at 12 000–16 000 cigarettes/min. The emulsion’s ethylene comonomer content, approximately 12–15 wt% of the copolymer backbone, imparts permanent flexibility to the bond line at filter wrapper and tipping paper interfaces, preventing micro-cracking during downstream laser perforation and eliminating loose-end defects under ISO 6565:2017 draw resistance testing near the filter circumference. pH is adjusted to 4.5–5.2 (ASTM E70-19), a range selected for compatibility with borosilicate tipping paper pigments and calcium carbonate-loaded plug wrap coatings, where alkaline emulsions accelerate browning via Maillard-type side reactions at elevated drying zone temperatures of 70–90 °C. The minimum film-forming temperature, recorded at < 2 °C under ISO 2115:1996, ensures safe shipment and winter warehouse storage without irreversible coagulation that plagues higher-Tg terpolymer dispersions. Residual vinyl acetate monomer is held below 100 ppm (GC headspace, ISO 13741-1:1998), aligning with the voluntary commitments outlined in the German BfR Recommendation XXXVI for paper and board intended for short-term oral contact, though direct food contact is not the application intent.

    What Separates JZ-I from Conventional Cigarette Assembly Emulsions

    Three functional divergences are routinely cited in shift-log comparisons against predecessor PVAc homopolymers and first-generation VAE types with viscosities exceeding 1 500 mPa·s. First, the low-viscosity profile permits direct pumping from IBC totes through 10 µm in-line basket strainers without viscosity-breakdown dilution water, which historically shifts the solids-content window and extends dryer setpoint recovery time by 6–8 minutes after a grade change. Second, the ethylene segment lowers the cohesive fracture susceptibility of the adhesive film at the perforation zone. In production trials on an Hauni MAX tipping unit, JZ-I demonstrated a perforation-edge crack density of < 0.3 cracks/mm at 300 Cambridge filter ventilation holes, compared to 1.2–1.8 cracks/mm for a plasticized PVAc of similar solids. Third, rheometric profiling with an Anton Paar MCR 302 in controlled shear rate mode reveals a shear viscosity undershoot at 1 000 s⁻¹ to 80 mPa·s without onset of shear-induced particle flocculation, a characteristic attributed to a narrow, surfactant-stabilized particle size distribution centered at 0.6 µm (D₅₀, laser diffraction, ISO 13320:2020). This eliminates the cobwebbing and adhesive mist that compromises moiré sensor readouts for circumference monitoring. No additional plasticizer is pre-compounded into JZ-I, diverging from suppliers who co-synthesize with dibutyl phthalate or triacetin. Plasticizer-free formulation removes the risk of migration staining on tipping sheet varnish, a complaint traced via gas chromatography-mass spectrometry in at least one regional recall where yellow halo defects on white tipping correlated with plasticizer bloom at 35 °C/85 % RH aging.

    Specification Matrix and Regulatory Cross-Reference

    The tabulated parameters below derive from Certificate of Analysis data for lot #JZ2409-17, representative of production-scale output from a 5 m³ semi-batch emulsion reactor equipped with dual pitched-blade turbine agitation at 120 rpm tip speed.
    ParameterTest MethodValue
    AppearanceVisual (ASTM D3925)White, homogeneous
    Solids contentISO 3251:2019 (2 h/105 °C)52.0 ± 1.0 %
    Viscosity (Brookfield LVF, 30 rpm)ASTM D1084-16 Method A250–450 mPa·s
    pHASTM E70-194.5–5.2
    DensityISO 2811-1:20161.06–1.08 g/cm³
    MFFTISO 2115:1996< 2 °C
    Particle size D₅₀ISO 13320:2020 (Mie)0.5–0.7 µm
    Residual VAMISO 13741-1:1998< 100 ppm
    Shear stabilityInternal method (Cowles, 5 min, 5 000 rpm)No coagulum on 45 µm sieve
    Wet tack (subjective, tipping paper/plug wrap)Fiber tear < 2 s
    A direct comparison to the predecessor grade, a standard-viscosity VAE (product code JZ-GS, 55 % solids, 1 200 mPa·s), is mapped below using production floor data from a single Protos 90S maker running identical tipping paper (basis weight 28 g/m², calcium carbonate loading 22 %).
    Performance AttributeJZ-I (low viscosity)JZ-GS (standard viscosity)
    Glue pot temperature setpoint23–25 °C28–32 °C
    Pump back pressure at 12 000/min0.4–0.6 bar1.1–1.5 bar
    Adhesive consumption per million cigarettes2.4–2.6 kg2.2–2.4 kg
    Roller wrap incidents / 8 h shift< 13–5
    Perforation-edge cracking (CT scan score)0.3 cracks/mm1.5 cracks/mm
    Stringing width at roller nip (laser line scan)< 50 µm150–250 µm
    The increased consumption of JZ-I reflects a slightly lower solids content and a deliberate, controlled adhesive film thickness that compensates for reduced body viscosity. The trade-off, however, is net machine uptime gain, documented at +4.2 % OEE across a 30-day observation window in a facility running 120 shifts with six makers dedicated to JZ-I.

    Can Low Viscosity Maintain Seam Integrity During Conditioning Room Cycling?

    Conditioning protocol per ISO 3402:1999 specifies 22 ± 2 °C and 60 ± 3 % RH for a minimum of 48 h prior to analytical testing. Because JZ-I lacks plasticizer migration, film modulus does not decrease over extended equilibration. Dynamic mechanical analysis (DMA) on cast films at 1 Hz shows a storage modulus plateau of 210–240 MPa at 25 °C after conditioning, with tan δ rising only above 55 °C. This is substantially stiffer than plasticized PVAc films, which can show < 50 MPa modulus at ambient humidity conditions and exhibit blocking under reel storage pressure. Filter “firmness” retention—a critical sensory parameter measured by compression force at 20 % deformation on an Instron 5943—remains within ± 3 % of unconditioned controls after three consecutive cycles between 15 % and 75 % RH at 22 °C. In the worst case observed, film-whitening (water sorption) was reversible within 2 h of re-equilibration at 40 % RH, with no permanent loss of transparency or bond strength. Immediate wet tack, which governs transfer efficiency on high-speed tipping rollers with contact time under 10 ms, has been characterized by a custom pneumatic tack probe. At a separation speed of 100 mm/s and a compression force of 2 N applied for 5 ms, JZ-I shows a tack energy of 18–22 mJ versus 9–12 mJ for the standard-viscosity homogeneous PVAc. The mechanism is not faster drying but rather the ethylene-rich low-Tg chain segments that remain mobile and entangle with cellulosic fiber surfaces immediately upon contact, creating adhesion by intimate molecular contact before evaporation of water is complete. Machine operators frequently encounter a specific incompatibility: direct substitution of JZ-I into glue lines designed for high-viscosity emulsions without recalibrating the doctor blade gap. At initial startup, an unadjusted blade gap of 0.12 mm caused a transient adhesive film weight drop to 1.8 g/m², insufficient for bond development, until the gap was widened to 0.18–0.20 mm. This sensitivity highlights the engineering requirement that roller geometry and metering systems must be dialed for the specific low-shear flow behavior of JZ-I, rather than relying on the same mechanical settings configured for thicker grades.

    Rheological Behavior in High-Shear Nozzle Application and Clean-Run Characteristics

    On systems employing non-contact slot-die application where adhesive is extruded through a 0.3 mm gap at 50–80 bar pressure directly onto the plug wrap, the low-viscosity emulsion minimizes die lip build-up. Long-term trials with an ITW Dynatec slot coater measuring die land deposit accumulation at 8 h intervals showed an average of 0.04 g dried adhesive/linear cm of die for JZ-I, versus 0.12 g/cm for a comparable-viscosity emulsion modified with hydroxyethyl cellulose thickener. The difference is attributed to the absence of high-molecular-weight water-soluble co-thickeners, leaving the JZ-I formulation entirely colloid-stabilized by a poly(vinyl alcohol) protective colloid with a degree of hydrolysis of 87–89 mol% and a 4 % solution viscosity of 5.0–6.0 mPa·s. At dryer exhaust temperatures exceeding 95 °C, this stabilizer does not undergo thermogelling that would produce string-like residues and char on static mixer elements. A note on application temperature tolerance: storing JZ-I adhesive totes in an unheated mezzanine during winter led to one site observation of viscosity rising to 980 mPa·s at 8 °C product temperature due to partial freeze-concentration effects at the tote walls, even though the MFFT is low. Gentle recirculation at 18–20 °C restored bulk viscosity to within specification within 4 h. Thus, while the product is freeze-thaw stable for 3 cycles (ASTM D7149-05), performance restoration does require thermal equilibration, and direct feeding from an unheated outdoor bulk storage tank is not recommended below 12 °C. Without prior cleaning, blending JZ-I with cationic rosin-based tackifiers results in instantaneous flocculation at the mixing boundary owing to pH mismatch and charge destabilization, so dedicated stainless steel 316L lines with separate CIP drains are specified for production areas that alternate between anionic and cationic dispersion chemistries. The cleaning protocol for JZ-I lines uses 60 °C softened water at 3 m/s flow velocity for 20 min, sufficient to remove films without alkaline cleaners that could promote aluminum corrosion in pump impeller housings. JZ-I is supplied in 1 000 L intermediate bulk containers and 200 L steel drums. Shelf life from date of manufacture is 6 months when stored at 5–30 °C in unopened original containers, protected from direct sunlight. Out-of-spec material showing settlement or gelling should be mechanically agitated and re-tested against the specification matrix; aggregated sediment exceeding 0.1 wt% on a 100 µm screen indicates irreversible freeze-damage and the lot must be quarantined. For applications beyond conventional cigarette tipping, JZ-I has also been trialed as a filter rod center-line adhesive for specialty segment assembly (charcoal-on-acetate) with bond strength results meeting the manufacturer’s internal 0.3 MPa tensile shear minimum, though published data for this specific configuration is limited to one confidential production campaign and should not be generalized without site-specific validation.