B29K2019/00

PROCESS FOR PRODUCING 3D STRUCTURES FROM POWDERED RUBBER MATERIAL AND ITS PRODUCTS

A process is described for producing a three dimensional structure, the process including the following steps a) applying of at least a first material M.sub.1 onto a substrate to build a first layer L.sub.1 on the substrate; b) layering of at least one further layer L.sub.y of the first material M.sub.1 or of a further material M.sub.x onto the first layer L.sub.1, wherein the at least one further layer Ly covers the first layer L.sub.1 and/or previous layer L.sub.y1 at least partially to build a precursor of the three dimensional structure; c) curing the precursor to achieve the three dimensional structure; wherein at least one of the materials M.sub.1 or M.sub.x provides a Mooney viscosity of >10 ME at 60 C. and of <200 ME at 100 C. before curing and wherein at least one of the first material Mi or of the further material M.sub.x is a powder. Also, a three dimensional structure is described which is available according to the process according to the invention.

Graphene core for a golf ball with a soft cover

A golf ball with a core comprising polybutadiene and graphene, and a soft cover is disclosed herein. The golf ball has a dual core with an outer core comprising polybutadiene and graphene. The soft cover is preferably composed of a highly neutralized polymer, a first ionomer, a second ionomer, and a paraloid impact modifier.

Microfluidic device, composition and method of forming

A composition made of at least 60 wt. % of a thermoplastic elastomer resin and additives that are solid at least from 0-50 C., that has a Shore A hardness that is less than about 50 bears a patterned surface, the pattern comprising at least one microfluidic channel having a cross-sectional dimension smaller than 100 microns is a substrate for forming a microfluidic device. The chief advantages of such compositions are: its ability to bond in a sealing manner to smooth surfaces of many different compositions, its ease of manufacture and microstructure patterning, and its general impermeability to liquids.

METHOD FOR THE TREATMENT OF A SEALANT LAYER OF A TYRE, SEALANT AND TYRE

A method for reducing the stickiness on the surface exposed to the air of a sealant layer applied on an inner cavity of a tyre. The method establishes that the surface exposed to the air of the sealant layer is subject to a UV radiation.

Elastomeric film-forming compositions and articles made from the elastomeric film

The invention relates to an elastomeric film-forming composition comprising (a) a copolymer formed from monomers consisting of chlorobutadiene and an ethylenically unsaturated carboxylic acid or ester, and (b) one or more cross-linking agents. The invention also relates to dipped articles, gloves, methods of manufacture and uses involving the composition.

RELEASE AGENT FOR VULCANIZED RUBBER MOLDING

A release agent for vulcanized rubber molding is provided which has excellent mold releasing properties and washability. This release agent for vulcanized rubber molding contains an alkylene oxide adduct (A) of an active hydrogen group-containing compound having four active hydrogen atoms in the molecule, wherein the aforementioned alkylene oxide adduct (A) of an active hydrogen group-containing compound has a number average molecular weight of 5000-30000, and contains 50-95 mass % of an oxyethylene group.

Glove Dipping Composition, Method for Manufacturing Gloves, and Gloves
20190161601 · 2019-05-30 ·

Provided is: A glove dipping composition including, at least: an elastomer that contains a (meth)acrylonitrile-derived structural unit, an unsaturated carboxylic acid-derived structural unit and a butadiene-derived structural unit in a polymer main chain; a polycarbodiimide; zinc oxide and/or an aluminum complex; water; and at least one pH modifier selected from an ammonium compound and an amine compound, in which glove dipping composition the polycarbodiimide includes at least one polycarbodiimide containing a hydrophilic segment in its molecular structure and has an average polymerization degree of 3.8 or higher and a carbodiimide equivalent of 260 to 600; the polycarbodiimide is added in an amount of 0.1 to 4.0% by weight and zinc oxide and/or the aluminum complex is/are added in an amount of 0.1 to 5.6% by weight with respect to the total solid content of the glove dipping composition; and the glove dipping composition has a pH of 9.0 to 11.5.

RESILIENT SURFACE COVERINGS AND METHODS OF MAKING AND USING THEREOF
20190136002 · 2019-05-09 ·

The present disclosure provides, among other things, surface coverings with a protective coat applied thereto a rubber material. As provided herein, in some embodiments, a surface covering has or includes an exposed surface that is no-wax. The present disclosure further provides methods of making, and methods of using. Such surface coverings have surprising and beneficial attributes. They are particularly advantageous as resistant to soiling and abrasion. These surface covering are also resistant to crumbling under load. Such surface coverings would be useful as flooring products with desirable properties. In particular, such abrasion and soil resistant surfaces could be useful as a rubber flooring product.

Manufacturing method of gasket, gasket material molding the gasket for heat exchanger, and heat exchanger
10280300 · 2019-05-07 · ·

A manufacturing method of a gasket adhering to a resin member, the method includes mixing a plurality of liquid materials stored separately and molding the gasket that is made of a mixture of the plurality of liquid materials. The mixture constitutes a liquid silicone-rubber composition that contains a base resin, a crosslinking agent, a curing catalytic agent, a hydrophilic silica filler, and a silane-coupling agent. The hydrophilic silica filler and the silane-coupling agent are contained in different liquid materials before the plurality of liquid materials are mixed.

Systems and methods for manufacturing reinforced weatherstrip

Methods for manufacturing fabric-reinforced weatherstrip include incorporating a fabric application step into a process for making coated substrates. In one embodiment, a strip of the fabric from a roll of material may be applied directly onto a coating after it has been applied in a coat die to a foam profile, while the coating is still in the molten state. Alternatively, a fabric application plate may be attached to an upstream side of coating die with a fabric feed channel cut into the plate. The fabric follows the channel to contact and mate with the foam profile. The fabric applicator plate may be configured so as to exert pressure on only the part of the product where the fabric is being applied. Ultrasonic welding techniques may also be employed.