B29K2623/12

Polypropylene for use in BOPP applications

The invention relates to a biaxially oriented polypropylene (BOPP) film comprising a propylene homopolymer or propylene-ethylene copolymer having an ethylene content of at most 1.0 wt % based on the propylene-ethylene copolymer having an Mw/Mn in the range from 5.0 to 12, wherein Mw stands for the weight average molecular weight and Mn stands for the number average weight and wherein Mw and Mn are measured according to ASTM D6474-12, an XS in the range from 1.0 to 6.0 wt %, wherein XS stands for the amount of xylene solubles which are measured according to ASTM D 5492-10, a melt flow rate in the range of 1 to 10 dg/min as measured according to IS01133 (2.16 kg/230° C.) and a crystal size distribution as indicated by a height/width ratio of the highest peak of the first cooling curve of at least 0.70 W/g° C. as determined by ASTM D3418-08 using a heating and cooling rate of 10° C./min.

Molding unit with off-center neck passage opening

Disclosed is molding unit for the forming of containers made of thermoplastic material including: two half-molds delimited by a front joint face and by a rear assembly face, with the two half-molds being able to occupy a joined position via their joint face; and a molding cavity that is made of two parts in each joint face, where the cavity opens vertically upward via a passage opening. In the joined position, the assembly faces of the mold have two planes of symmetry that intersect at a central vertical axis of the mold. The central axis of the passage opening is offset transversely in relation to the central axis of the mold.

METHOD OF MAKING A SADDLE AND RELATED SADDLE
20210114677 · 2021-04-22 ·

A method of making a saddle having a shell and a padding involves arranging the shell in thermoplastic polymer inside a mould for injection moulding having a die and a punch, the shell having a support surface, which in use faces the padding, and a supporting surface coupled to an inner wall of the punch or of the die, the support surface forming a wall of the moulding cavity; closing the mould; and making the padding by injection moulding a thermoplastic polymer over the shell, between the support surface and the mould.

METHOD OF FORMING AN ARTICLE
20210069943 · 2021-03-11 ·

Methods of forming an article from a molten plastic composition comprising a polymer and a blowing agent. The methods include injecting the molten plastic composition into a mould, allowing the plastic composition to form a first solid skin adjacent to an in contact with a first cavity-forming surface of the mould and a second solid skin adjacent to and in contact with a second cavity-forming surface of the mould, and then opening the mould before the molten plastic composition between the first and second solid skins in at least one portion of the circumference of a region of the mould cavity defining an annular cross-section of the cavity has solidified.

Nonwovens Having Aligned Segmented Fibers
20210087725 · 2021-03-25 ·

Nonwoven fabrics suitable for a wide variety of applications (e.g., healthcare, filtration, industrial, packaging, etc.) are provided. In one aspect, the nonwoven fabric includes a plurality of segmented fibers. Each of the plurality of segmented fibers may comprise a fiber axis and a plurality of alternating larger diameter and smaller diameter segments along the fiber axis. The plurality of segmented fibers may be substantially aligned in a first direction.

BLOW MOLDING METHOD, COMPOSITE PREFORM, COMPOSITE CONTAINER, INNER LABEL MEMBER, AND PLASTIC MEMBER

First, a composite preform 70 including a preform 10a and a plastic member 40a in close contact with the outer surface of the preform 10a is made by preparing the preform 10a made of plastic material and arranging the plastic member 40a to surround the outer surface of the preform 10a. Subsequently, the composite preform 70 is heated and inserted in a blow molding die 50 and undergoes blow molding in the blow molding die 50, by which the preform 10a and the plastic member 40a of the composite preform 70 are inflated integrally and a composite container 10A is obtained.

BLOW MOLDING METHOD, COMPOSITE PREFORM, COMPOSITE CONTAINER, INNER LABEL MEMBER, AND PLASTIC MEMBER

First, a composite preform 70 including a preform 10a and a plastic member 40a in close contact with the outer surface of the preform 10a is made by preparing the preform 10a made of plastic material and arranging the plastic member 40a to surround the outer surface of the preform 10a. Subsequently, the composite preform 70 is heated and inserted in a blow molding die 50 and undergoes blow molding in the blow molding die 50, by which the preform 10a and the plastic member 40a of the composite preform 70 are inflated integrally and a composite container 10A is obtained.

IMPROVEMENTS IN METHOD AND APPARATUS FOR INTEGRAL DOUBLE-WALLED CONTAINER STRUCTURES
20210039301 · 2021-02-11 ·

A method and apparatus for the formation of double-walled containers includes two integrally connected containers extending in the same direction with an air gap between them, stretch-blow moulded as single bodies out of thermoplastic material, and suitable for mass-production. A thermoplastic tubular blank is formed and then heat-conditioned. The heat-conditioned tubular blank is then mechanically stretched longitudinally and blow-formed outwards by gas pressure to form first and second containers. A piston and mould cavity cooperate to further mould the containers such that the second smaller container side wall(s) are at least substantially not in contact with the second container shaped mould cavity set and may be inverted inside-out, while the second smaller container bottom wall at least substantially does not invert, in order for the second smaller container to become a substantially mirror-image inverted second smaller container extending in the same direction as, and interior to, the first container.

MICROFRACTURED FILM AND METHOD FOR MAKING
20210017425 · 2021-01-21 ·

A method for imparting hand-tearability to an organic polymeric film by impinging a multiplicity of ceramic microblades on a major surface of the organic polymeric film. The resulting microfractured organic polymeric film can be used as a hand-tearable tape backing for a hand-tearable adhesive tape.

Underpants-type disposable diaper with reduced lateral side seal tearing

An underpants-type disposable diaper includes outer members 12F and 12B having stretchable regions A2 and A3 disposed adjacent to the inner edges of the side seal portions 12A in the width direction. The stretchable regions A2 and A3 include multiple elongated elastically stretchable members 19 disposed between two sheet layers 12S and 12H at predetermined intervals in the front-back direction and extending in the width direction. The elastically stretchable members 19 each include two fixed ends 19f fixed to the two sheet layers 12S and 12H, and the section between the fixed ends 19f is unfixed to the two sheet layers 12S and 12H. The two sheet layers 12S and 12H are welded into sheet bonding sections 20, at positions between the elastically stretchable members 19 in the stretchable regions A2 and A3 adjacent is the front-back direction. No sheet bonding section protrudes from the side seal portion in the stretchable regions A2 and A3.