US4514449A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Profile strip, especially for the production of window or door frames
Assignee: HT Troplast AG
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Filing: 1983-01-28
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Granted: 1985-04-30
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Expires: 2003-01-28
Abstract
Abstract A profile strip, especially suitable for the production of window or door frames, has an optionally hollow core profile made from a glass fiber-reinforced PVC composition and a shell made from a synthetic resin compatible with PVC and exceeding the impact resistance of the core profile.
Inventors
- 👤 Wolfgang Budich
- 👤 Bertram Gasper
- 👤 Josef Kurth
- 👤 Karl-Gunter Scharf
- 👤 Waldemar Wissinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:52
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/30; E06B3/04; E06B3/06; E06B3/08; E06B3/20; E06B3/22; E06B3/221; E06B3/222; E06B2003/224; E06B3/205; Y; Y10; Y10T; Y10T428/00; Y10T428/23; Y10T428/239; Y10T428/24; Y10T428/24628; Y10T428/24744; Y10T428/24942; Y10T428/25; Y10T428/252; Y10T428/26; Y10T428/31504; Y10T428/31855; Y10T428/31909
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
182 words
A profile strip for the manufacture of frames for windows or doors comprising a core profile formed of reinforced synthetic resin and a synthetic resin shell surrounding at least a part of the core profile; said core profile being formed of a glass fiber-reinforced polyvinyl chloride resin-containing composition, additionally containing per 100 parts by weight of a polyvinyl chloride resin having a K value between 55 and 75, 40 to 100 parts by weight of glass fibers having a diameter of between 5 and 25 μm with a length of up to 12 mm, and 0 to 25 parts by weight of a mineral filler with an average particle diameter of below 50 μm; said core profile exhibiting a microporous, slightly roughened surface, and said core profile being bonded to the shell; said shell being free of glass fibers, being formed of a synthetic resin that is compatible with polyvinyl chloride resin and exceeding the impact resistance of the core profile and said strip exhibiting, in the extrusion direction, a modulus of elasticity of at least 8000 N/mm 2 at 23° C.
Claim 2
Dependent Claim
182 words
A profile strip for the manufacture of frames for windows or doors comprising a core profile formed of reinforced synthetic resin and a synthetic resin shell surrounding at least a part of the core profile; said core profile being formed of a glass fiber-reinforced polyvinyl chloride resin-containing composition, additionally containing per 100 parts by weight of a polyvinyl chloride resin having a K value between 55 and 75, 40 to 100 parts by weight of glass fibers having a diameter of between 5 and 25 μm with a length of up to 12 mm, and 0 to 25 parts by weight of a mineral filler with an average particle diameter of below 50 μm; said core profile exhibiting a microporous, slightly roughened surface, and said core profile being bonded to the shell; said shell being free of glass fibers, being formed of a synthetic resin that is compatible with polyvinyl chloride resin and exceeding the impact resistance of the core profile and said strip exhibiting, in the extrusion direction, a modulus of elasticity of at least 8000 N/mm 2 at 23° C.
Claim 3
Dependent Claim
39 words
The profile strip according to claim 1, wherein the core profile furthermore contains up to 30 parts by weight of polymeric modifier per 100 parts of the polyvinyl chloride resin for increasing the impact strength of the core profile.
Claim 4
Dependent Claim
30 words
The profile strip according to claim 1, wherein the core profile furthermore contains 2.5-5.5 parts by weight of a mold release agent per 100 parts of said polyvinyl chloride resin.
Claim 5
Dependent Claim
93 words
A profile strip according to claim 1, wherein the core profile contains, per 100 parts by weight of polyvinyl chloride having a K value of between 55 and 75, 40-80 parts by weight of glass fibers having a diameter of between 5 and 25 m with a length of 0.5 to 12 mm, 1 to 15 parts by weight of a powdery mineral filler having an average particle diameter of below 50μm, and 2.5-5.0 parts by weight of a mold release agent, and up to 30 parts by weight of a polymeric modifier.
Claim 6
Dependent Claim
25 words
A profile strip according to claim 1, wherein the core profile has a wall structure that exhibits wall thicknesses of between 1.0 and 10 mm.
Claim 7
Dependent Claim
21 words
A profile strip according to claim 1, wherein the shell has a wall structure with a wall thickness of 0.2-4 mm.
Claim 8
Dependent Claim
81 words
A profile strip according to claim 1, wherein the shell is made up from a member selected from the group consisting of polyvinyl chloride, polyvinylidene chloride, post-chlorinated polyvinyl chloride, a copolymer obtained from a chlorinated vinyl monomer and at least one monomer copolymerizable therewith, a graft copolymer of vinyl chloride with ethylene-vinyl acetate, alkyl acrylate, vinyl acetate, chlorinated polyethylene, butadiene, polyolefin, and mixtures thereof, and also contains additives, including heat stabilizers, mold release agents, pigments, UV absorbents, processing aids and modifiers.
Claim 9
Dependent Claim
38 words
A profile strip according to claim 1, wherein the shell is made up from a member selected from the group consisting of polyalkyl acrylate, acrylate-butadiene-styrene copolymer, methyl methacrylate-butadiene-styrene copolymer, (MBS), polyester polyvinylidiene fluoride, (PVF), PVDF and mixtures thereof.
Claim 10
Dependent Claim
20 words
A profile strip according to claim 1, wherein the shell is partially composed of two materials different from each other.
Claim 11
Dependent Claim
17 words
A profile strip according to claim 1, wherein the shell is provided with a profiled configuration, and
Claim 12
Dependent Claim
25 words
A profile strip according to claim 1, wherein the shell is built up at least, in part, in a multiple-layer form of various polymeric materials.
Claim 13
Dependent Claim
33 words
A profile strip according to claim 11 further comprising a cover layer partially covering the shell, said cover layer being formed of a weather-resistant synthetic acrylate resin, having a thickness of 0.1-1.2 mm.
Claim 14
Dependent Claim
25 words
A profile strip according to claim 1, wherein the core profile is thermally stabilized and the shell is stabilized thermally and with respect to light.
Claim 15
Dependent Claim
31 words
A profile strip according to claim 1, wherein said strip is manufactured by coextrusion and calibrated on the outer surfaces thereof the profile strip exhibiting a residual shrinkage of below 0.5%.
Claim 16
Dependent Claim
28 words
A profile strip according to claim 7, wherein the shell contains, besides the synthetic resin, up to 20% by weight of a modifier comprising EVA, CPE or MBS.
Claim 17
Dependent Claim
73 words
A profile strip according to claim 1, wherein said polyvinyl chloride resin comprises a member selected from the group consisting of polyvinyl chloride having a K value of between 55 and 75, polyvinylidiene chloride, post chlorinated polyvinyl chloride, a copolymer of at 75% by weight of vinylchloride and at least one ethylenically unsaturated monomer, a graft copolymer of vinyl chloride acetate, methyl acrylate, vinyl acetate, chlorinated polyethylene, butadiene a polyolefin and mixtures thereof.
References Cited (Backward Citations)
GB1498450A
Cited
US4420920A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-04-29 | 1988-10-29 | 1989-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-04-29 | 1992-10-29 | 1993-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-04-29 | 1996-10-29 | 1997-04-30 | $7700.00 | Window Closed / Lapsed |