UST101402I4 - Process of paste extrusion - Google Patents
Process of paste extrusion Download PDFInfo
- Publication number
- UST101402I4 UST101402I4 US06/201,974 US20197480A UST101402I4 US T101402 I4 UST101402 I4 US T101402I4 US 20197480 A US20197480 A US 20197480A US T101402 I4 UST101402 I4 US T101402I4
- Authority
- US
- United States
- Prior art keywords
- ptfe
- paste extrusion
- mixture
- weight
- extrusion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/12—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C08L27/18—Homopolymers or copolymers or tetrafluoroethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/18—Spheres
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/12—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
Abstract
Pipes with walls thicker than 4 mm are made by paste extrusion of PTFE powder in the presence of a lubricant. The extrusion is carried out at a reduction ratio below 20:1. The PTFE powder is a mixture of 80 to 99% by weight of coagulated dispersion grade PTFE and 20 to 1% by weight of PTFE having a median particle size less than 50 micrometers. The mixture is preferably a co-coagulation of the two forms of PTFE.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB7939952/79 | 1979-11-19 | ||
GB7939952A GB2065142A (en) | 1979-11-19 | 1979-11-19 | PTFE for paste extrusion |
Publications (1)
Publication Number | Publication Date |
---|---|
UST101402I4 true UST101402I4 (en) | 1982-01-05 |
Family
ID=10509294
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US06/201,974 Pending UST101402I4 (en) | 1979-11-19 | 1980-10-29 | Process of paste extrusion |
Country Status (2)
Country | Link |
---|---|
US (1) | UST101402I4 (en) |
GB (1) | GB2065142A (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USD746148S1 (en) * | 2014-07-14 | 2015-12-29 | Berlin Packaging, Llc | Bottle |
CN104672728B (en) * | 2015-03-16 | 2017-05-24 | 深圳市格瑞斯特环保技术有限公司 | Silicon pump pipe and manufacturing method thereof |
TWD177367S (en) * | 2015-11-24 | 2016-08-01 | 永豐餘消費品實業股份有限 | Portion of container |
TWD177368S (en) * | 2015-11-24 | 2016-08-01 | 永豐餘消費品實業股份有限 | Portion of container |
-
1979
- 1979-11-19 GB GB7939952A patent/GB2065142A/en not_active Withdrawn
-
1980
- 1980-10-29 US US06/201,974 patent/UST101402I4/en active Pending
Also Published As
Publication number | Publication date |
---|---|
GB2065142A (en) | 1981-06-24 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
STPP | Information on status: patent application and granting procedure in general |
Free format text: DEFENSIVE PUBLICATION OR SIR FILE |