red and black color neck pvc heat shrink capsules for wine bottle

Scope of application: It is applied to the outer layer of cork/screw stoppers, and tightly adheres to the bottle mouth after heating and shrinking. It is widely used for bottle mouth protection and packaging decoration of dry red, dry white, ice wine, fruit wine, and foreign wine

Core positioning: A disposable bottle mouth packaging based on food grade PVC heat shrink film, with the core functions of dust and moisture prevention, protection of cork stoppers, one-time anti-counterfeiting and anti-theft, brand decoration and beautification, replacing traditional toxic lead caps. It is the most cost-effective bottle mouth standard matching solution in the red wine industry.

Product Structure and Material Description

Three layer functional structure

Surface printing/process layer

The outer layer of PVC film can be used for monochrome printing, multi-color overprinting, hot stamping, silver stamping, and embossed embossing, which serves the purpose of brand display and decoration. The printing adhesion is strong, and the pattern does not deform or fall off after shrinkage.

PVC heat shrink substrate layer

The core body is made using biaxial stretching technology, which uniformly shrinks radially after heating, tightly wrapping the bottle mouth and cork, forming a physical protective layer that is moisture-proof, dustproof, and insect proof.

Built in easy to tear cable layer

The inner side of the rubber cap is embedded with high-strength nylon tear off wire, with the wire end exposed. With a gentle pull, the rubber cap can be completely torn longitudinally without the need for cutting tools, making it easy to open without damaging the bottle mouth.

Core raw material: food grade PVC heat shrink film

Food safety compliance: using new food grade PVC raw materials, no odor, no excessive plasticizers, and no reaction with cork or glass; Due to only coming into contact with the outer side of the bottle mouth and not directly contacting the liquor, the food safety risk is extremely low and meets domestic and international food contact material standards.

Uniform and stable shrinkage: biaxially stretched, with high horizontal shrinkage and low vertical shrinkage. After heating, it fits smoothly and conforms to the curved surface of the bottle mouth, without wrinkles, curled edges, or excessive local shrinkage, and has a high degree of regularity in appearance.

Strong physical protection: high tensile strength, good toughness, not easily damaged after shrinkage, can effectively block dust, water vapor, and storage pests (wine mites, mold), protect cork stoppers from pollution and insect infestation, and extend the storage period of red wine.

Excellent printing adaptability: The film surface is flat and smooth, with high color reproduction, supporting various processes such as gravure printing, flexographic printing, hot stamping, embossing, etc., which can achieve rich visual effects.

Production process flow

Brand new PVC raw material → extrusion casting film → biaxial stretching shaping → surface printing/hot stamping/embossing → cylindrical forming cutting → built-in easy to tear wire → full inspection of finished product size → appearance defect screening → counting packaging → storage

Printing process: Supports gravure printing, flexographic printing, hot stamping, silver stamping, relief embossing, with a pattern overlay accuracy of ≤ 0.2mm;

Molding process: high-precision cutting, stable size, compatible with fully automatic capping equipment, no jamming or sticking.

Frequently Asked Questions (FAQ)

What is the difference between PVC heat shrink caps and aluminum-plastic caps or tin caps?

The core differences lie in material, cost, and positioning:

PVC heat shrink cap: with the lowest cost, flexible process, and extremely high cost-effectiveness, it is a standard configuration for Volkswagen red wine, with complete protection and anti-counterfeiting functions;

Aluminum plastic cap/tin cap: With a stronger metallic texture and higher grade, but at a cost 3-5 times that of PVC, it is mostly used for high-end winery wines and collectible red wines.

Flexible selection based on product pricing, target channels, and cost budget.

What are the reasons for wrinkling and loose fit after shrinkage?

There are three common reasons: ① Insufficient or uneven heating temperature; ② The size of the rubber cap does not match the diameter of the bottle mouth; ③ The shrinkage rate parameter of the film material does not match. Our products undergo standard bottle mouth shrinkage testing before leaving the factory, matched with universal red wine bottles, and combined with standardized uniform heating operations, can achieve a smooth fit.

Can it be reused? How effective is anti-counterfeiting?

Not reusable. The PVC heat shrink cap is a disposable heat shrink packaging. After tearing it open, the structure is completely damaged and cannot be restored. The anti-counterfeiting effect is intuitive and reliable, which can effectively avoid the falsification of secondary filling of recycled bottles.

Can I customize a brand logo? What is the minimum order quantity?

Support full-color printing, hot stamping and other full process customization. Blank universal models have no minimum order quantity limit and can be shipped in small quantities; The regular minimum order quantity for customized printing is 10000 to 50000 pieces, and a small plate making fee can be charged for small batch orders.

Is it suitable for long-term cellar storage of red wine?

Suitable for daily storage and long-term storage of mid-range circulation products. PVC heat shrink caps can effectively isolate dust, moisture, and insect pests, protect cork stoppers, and, when combined with the correct storage environment, meet the bottle mouth protection needs of red wine aged for several years; If you pursue the ultimate collectible texture and micro breathable performance, you can pair it with aluminum-plastic caps or tin caps.