Polymeric composition and sealant layer with same

A technology of polymers and compositions, applied in synthetic resin layered products, layered products, transportation and packaging, etc., can solve the problems of unqualified products, increased costs, waste generation, etc., achieve low heat sealing initiation temperature, improve heat The effect of sealing properties, high hot tack strength
CN103228723AActive Publication Date: 2013-07-31DOW GLOBAL TECH LLC
16 Cites 13 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
DOW GLOBAL TECH LLC
Publication Date
2013-07-31

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

Disclosed herein is a polymeric composition. The polymeric composition includes: (A) a propylene / a-olefin interpolymer; (B) an ethylene-based polymer; (C) a block composite comprising: i) a propylene-based crystalline polymer; ii) an ethylene / a-olefin polymer; and iii) a block copolymer comprising a propylene-based crystalline block and an ethylene / a-olefin block. The polymeric composition provides improved heat seals when formed into film, film layer, or flexible containers such as a retort pouch.
Need to check novelty before this filing date? Find Prior Art

Description

Background of the invention

[0001] Plastic films find use in a wide range of packaging applications, such as bags, containers, cups, sachets, tubes and trays. Laminates, monolayer films and multilayer films having heat sealable layers are commonly used in "form, fill and seal" (FFS) machines. The FFS machine produces a continuous flow of film packages that can be closed with a film-to-film seal.

[0002] A film-to-film heat-seal closure is formed by placing the film between opposing heat-seal jaws, applying pressure to the heat-seal clamps and applying heat in excess of the seal-initiating temperature of the film. Heat seal closures are generally strongest when prepared after the seal has cooled to ambient temperature. To increase throughput, packs are filled with product before the heat seal has had time to cool completely. Therefore, there is a need for a heat-sealed closure to provide sufficient strength very quickly without cooling the package to ambient temperature. I...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More