IE42483B1 - Solution welding of plastics - Google Patents
Solution welding of plasticsInfo
- Publication number
- IE42483B1 IE42483B1 IE318/76A IE31876A IE42483B1 IE 42483 B1 IE42483 B1 IE 42483B1 IE 318/76 A IE318/76 A IE 318/76A IE 31876 A IE31876 A IE 31876A IE 42483 B1 IE42483 B1 IE 42483B1
- Authority
- IE
- Ireland
- Prior art keywords
- weight
- parts
- polyisobutylene
- chalk
- solution welding
- Prior art date
Links
- 238000004023 plastic welding Methods 0.000 title 1
- 238000003466 welding Methods 0.000 claims abstract description 24
- 239000000463 material Substances 0.000 claims abstract description 17
- 229920002367 Polyisobutene Polymers 0.000 claims abstract description 14
- 239000000203 mixture Substances 0.000 claims abstract description 13
- -1 polyethylene Polymers 0.000 claims abstract description 11
- 239000011877 solvent mixture Substances 0.000 claims abstract description 9
- 239000004698 Polyethylene Substances 0.000 claims abstract description 8
- 239000006229 carbon black Substances 0.000 claims abstract description 8
- 239000003209 petroleum derivative Substances 0.000 claims abstract description 8
- 229920000573 polyethylene Polymers 0.000 claims abstract description 8
- 239000002904 solvent Substances 0.000 claims abstract description 8
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 claims abstract description 7
- 235000013539 calcium stearate Nutrition 0.000 claims abstract description 7
- 239000008116 calcium stearate Substances 0.000 claims abstract description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 5
- 239000010439 graphite Substances 0.000 claims abstract description 5
- 238000009835 boiling Methods 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 16
- 239000003795 chemical substances by application Substances 0.000 claims description 13
- 239000004033 plastic Substances 0.000 claims description 5
- 229920003023 plastic Polymers 0.000 claims description 5
- 239000000945 filler Substances 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 239000000654 additive Substances 0.000 claims description 2
- 230000000996 additive effect Effects 0.000 claims description 2
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims 1
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 abstract description 8
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 abstract description 6
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 abstract description 6
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 abstract description 6
- NNBZCPXTIHJBJL-UHFFFAOYSA-N decalin Chemical compound C1CCCC2CCCCC21 NNBZCPXTIHJBJL-UHFFFAOYSA-N 0.000 abstract description 6
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 abstract description 4
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 abstract description 2
- OPFTUNCRGUEPRZ-QLFBSQMISA-N Cyclohexane Natural products CC(=C)[C@@H]1CC[C@@](C)(C=C)[C@H](C(C)=C)C1 OPFTUNCRGUEPRZ-QLFBSQMISA-N 0.000 abstract description 2
- NHTMVDHEPJAVLT-UHFFFAOYSA-N Isooctane Chemical compound CC(C)CC(C)(C)C NHTMVDHEPJAVLT-UHFFFAOYSA-N 0.000 abstract description 2
- JVSWJIKNEAIKJW-UHFFFAOYSA-N dimethyl-hexane Natural products CCCCCC(C)C JVSWJIKNEAIKJW-UHFFFAOYSA-N 0.000 abstract description 2
- 239000007921 spray Substances 0.000 abstract description 2
- 241000870659 Crassula perfoliata var. minor Species 0.000 description 2
- 150000008280 chlorinated hydrocarbons Chemical class 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 238000009828 non-uniform distribution Methods 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 235000011837 pasties Nutrition 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/12—Bonding of a preformed macromolecular material to the same or other solid material such as metal, glass, leather, e.g. using adhesives
- C08J5/124—Bonding of a preformed macromolecular material to the same or other solid material such as metal, glass, leather, e.g. using adhesives using adhesives based on a macromolecular component
- C08J5/125—Adhesives in organic diluents
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J123/00—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers
- C09J123/02—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers not modified by chemical after-treatment
- C09J123/18—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms
- C09J123/20—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms having four to nine carbon atoms
- C09J123/22—Copolymers of isobutene; Butyl rubber ; Homo- or copolymers of other iso-olefines
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2666/00—Composition of polymers characterized by a further compound in the blend, being organic macromolecular compounds, natural resins, waxes or and bituminous materials, non-macromolecular organic substances, inorganic substances or characterized by their function in the composition
- C08L2666/02—Organic macromolecular compounds, natural resins, waxes or and bituminous materials
- C08L2666/04—Macromolecular compounds according to groups C08L7/00 - C08L49/00, or C08L55/00 - C08L57/00; Derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2666/00—Composition of polymers characterized by a further compound in the blend, being organic macromolecular compounds, natural resins, waxes or and bituminous materials, non-macromolecular organic substances, inorganic substances or characterized by their function in the composition
- C08L2666/54—Inorganic substances
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
1528414 Solution welding composition BE BE GE GES F R BODEN BAUTEN-UND UMWELTSCHUTZ mbH & CO KG 13 Feb 1976 [18 Feb 1975] 5685/76 Heading C3M [Also in Division B5] A solution welding paste for joining surfaces together, see Divisions B4-B5, comprises a solvent or solvent mixture, polyisobutylene, polyethylene, chalk, carbon black and/or graphite, calcium stearate, and an age resistor. In an Example, two strips of a composition of polyisobutylene, polyethylene, chalk, carbon black and/or graphite, calcium stearate and an age resistor are joined together along overlapping longitudinal edges using a solution of 20-40 parts by weight of the strip material in 60-80 parts by weight of petroleum hydrocarbon having a boiling range 80-110 C. Other specified solvents are benzene, toluene, decahydronaphthalene, iso-octane, cyclo-hexane, methylene chloride, carbon tetrachloride, ethyl acetate, or mixtures with each other or with petroleum hydrocarbon. The solution welding material is applied along an edge of one strip with a brush or spray pistol and the overlapping edge of the other strip is pressed thereagainst by a roller.
Description
The present invention relates to methods of solution welding together of plastics bodies and/or plastics sheet materials, of the same composition, especially of films or strips, and also suitable solution welding agents.
In the laying of strips of polyisobutylene-based material on roofs, it is known to employ a solvent mixture of low viscosity of petroleum hydrocarbon and decahydronaphthalene. The solvent mixture in this case is applied with a paint brush on the surfaces of the two strips to be joined, with continuous uniform rubbing, so that dissolving of the surfaces takes place. After this treatment, the strips are then squeezed or pressed together at the places to be joined. In this method, the following factors especially are regarded as disadvantageous :
(a) The solvent mixture must in practice be applied twice, that is to say on both the surfaces which are to be joined.
' ' (b) The rubbing process for dissolving the two surfaces · lis'· time-consuming, and requires extreme care on the part of the layer.
(cj. The solution welded seam must, after laying, additionally be sealed with a filler.
4248
- 3 (d) By a non-uniform distribution of the dissolved material during rubbing, reductions in cross section take place at the seam.
Therefore the object of the present invention is to 5 provide a method, which does not exhibit the disadvantages mentioned above. It should produce a real simplification in practice, and leads to welded joints of high quality
The essential features of a method according to the present invention are that it is a method of solution welding together of surfaces of two articles of the same composition, each including a plastics material, a filler, and an additive, in which a solution welding material is prepared by mixing a solvent or solvent mixture and a composition identical to that of the articles, so . as to form a paste, applying the paste to one or both of the surfaces to be joined, and pressing the surfaces together.
The invention will be explained below with reference to a particularly preferred embodiment, without being limited to it.
Two similar polyisobutylene-based strips, about 1.5 mm thick, 1 metre broad, and 10 metres long are to be joined together along their longitudinal edges over a seam width of 5 cms, in a homogeneous , strong and water-tight manner. The strips are of strip material which consists of:20 to 30 parts by weight polyisobutylene with a molecular weight between 100,000 and 120,000 (according to Staudinger),
2 4 8 3
- 4 5 to 10 parts by weight polyethylene of medium density, to 70 parts by weight chalk, to 7 parts by weight carbon black,
1 tp 2 parts by weight calcium stearate, and an age resister.
For this purpose, one first mixes 20 to 40 parts by weight of the same polyisobutylene-based strip material and 60 to 80 parts by weight of petroleum hydrocarbon (boiling range 80 to 110°C). Xn place of petroleum hydrocarbon one can also use benzene hydrocarbons, chlorinated hydrocarbons (for non-inflammable solution welding agents) and other suitable organic solvents. Examples for this are benzene, toluene, decahydronaphthalene, iso-octane, cyclo-hexane, methylene chloride, carbon tetrachloride, ethyl acetate, or their mixtures. Of course, if this is desired and possible, one can also mix the solvents mentioned above with petroleum hydrocarbon »
The pasty solution welding agent obtained in this way is applied in a single operation with a paint brush or spray pistol over a width of 5 cm along the edge of one of the polyisobutylene-based strips, and the overlapped second strip is pressed onto it with a roller. Of course one can also apply the solution welding agent according to the invention on both the surfaces which are to be joined, but this is not necessary. After a predetermined time, during which the solvent diffuses, a homogeneous seam has resulted. The strength of this seam is so great that, under a predetermined loading of the polyisobutylene-based strip, breakage of the material may indeed occur, but if the solution welding is properly done, the connecting seam is not destroyed. The solution welding paste, which emerges at the seam, simultaneously seals
- 5 the abutting edges of the seam, so that the seam joint is automatically made absolutely water-tight.
In practice, the method according to the invention, described above is used for example in the laying of polyisobutylene-based strips on flat roofs. The strips are then unrolled parallel to one another in plan, and overlap over a width of 5 cm. The overlap is then welded homogeneously with the solution welding paste, as described above.
With a method according to the invention, welding together of the edges and sealing of the seam thus take place in one operation, i.e. practically simultaneously, in a simple manner. By the use of a method according to the invention, there is also no longer need for the tedious rubbing of the edges of the film or of the strip. Moreover, the application of the solution welding agent does not require such great care as the rubbing of the edges of the film or of the strip, with a solvent mixture. Moreover, in a method according to the invention, the expenditure of work in laying strips on a roof can fall by more than 50% as compared with previous methods of work. A further fall in expenditure of work is achieved by the employment of suitable devices for applying the solution welding agent and for pressing the strips together. A further advantage of the solution welding agents used in performing the invention, compared with usual solution welding agents, is that the solution welding agents used in performing the invention can still be worked well at a temperature of -10°C, whereas the lower limit with the employment of customary solution welding agents lies around +5°C.
- 6 As the preferred compositions according to the invention there are those which consist of a solvent or solvent mixture, polyisobutylene, polyethylene, chalk, carbon black and/or graphite, calcium stearate, and an age resister, especially the embodiment which has been described above in detail.
Claims (5)
1. A method of solution welding together of surfaces of two articles of the same composition, each including a plastics material, a filler, and an additive, in which 5 a solution welding material is prepared by mixing a solvent or solvent mixture and a composition identical to that of the articles, so as to form a paste, applying the paste to one or both of the surfaces to be joined, and pressing the surfaces together. 10
2. A method according to Claim 1, in which the composition consists of polyisobutylene, polyethylene, chalk, carbon black and/or graphite, calcium stearate, and an age resister.
3. A method according to Claim l,in which the two 15 articles are both of strip material, and the composition used in mixing the paste is of the same strip material.
4. A method according to Claim 3, in which the strip material consists of 20 to 30 parts by weight polyisobutylene with a molecular weight between 100,000 and 120,000 20 (according to Staudinger); 5 to 10 parts by weight polyethylene of medium density, 60 to 70 parts by weight chalk; 3 to 7 parts by weight carbon black; 1 to 2 parts by weight calcium stearate; and an age resister, and the paste consists of 20 to 40 parts by weight of the strip 25 material and 60 to 80 parts by weight of petroleum hydrocarbon (boiling range 80 to 110°c). 5. A solution welding agent suitable for use in a method according to Claim 2, the agent being in the form of a paste, consisting of a solvent or solvent mixture, 30 polyisobutylene, polyethylene, chalk, carbon black and/ or graphite, calcium stearate and an age resister. -4348 3 - 8 6. A solution welding agent according to Claim 5, consisting of 60 to 80 parts by weight of petroleum hydrocarbon (boiling range 80 to 110°C) and 20 to 40 parts by weight of a plastics-based material, vzhich is
5. Composed of 20 to 30 parts by weight polyisobutylene with a molecular weight between 100,000 and 120,000 (according to Staudinger), 5 to 10 parts by weight polyethylene of medium density, 60 to 70 parts by weight chalk, 3 to 7 parts by weight carbon black, 1 to 2 parts by weight cal10 cium stearate , and an age resister.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19752506881 DE2506881B2 (en) | 1975-02-18 | 1975-02-18 | METHOD FOR SOURCE WELDING OF PLASTIC SHAPED BODIES AND / OR PLASTIC FLATS AND A SUITABLE SOURCE WELDING AGENT |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| IE42483L IE42483L (en) | 1976-08-18 |
| IE42483B1 true IE42483B1 (en) | 1980-10-29 |
Family
ID=5939156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IE318/76A IE42483B1 (en) | 1975-02-18 | 1976-02-18 | Solution welding of plastics |
Country Status (9)
| Country | Link |
|---|---|
| BE (1) | BE838428A (en) |
| DE (1) | DE2506881B2 (en) |
| DK (1) | DK67476A (en) |
| FR (1) | FR2301359A1 (en) |
| GB (1) | GB1528414A (en) |
| IE (1) | IE42483B1 (en) |
| IT (1) | IT1055333B (en) |
| LU (1) | LU74355A1 (en) |
| NL (1) | NL7601598A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4386991A (en) * | 1980-02-18 | 1983-06-07 | Mitsui Petrochemical Industries, Ltd. | Method of bonding 4-methyl-1-pentene polymers |
| DE3150022A1 (en) * | 1981-12-17 | 1983-06-30 | Dynamit Nobel Ag, 5210 Troisdorf | SOURCE WELDING AGENT AND METHOD FOR SWELL WELDING PLASTIC MOLDED BODIES |
| DE102015103704A1 (en) * | 2015-03-13 | 2016-09-15 | Biologische Insel Lothar Moll GmbH & Co. KG. | System for sealing in the construction sector |
| EP4412086A1 (en) | 2023-02-01 | 2024-08-07 | Commissariat à l'énergie atomique et aux énergies alternatives | Electronic circuit for providing a digital signal with ramps |
-
1975
- 1975-02-18 DE DE19752506881 patent/DE2506881B2/en not_active Ceased
-
1976
- 1976-02-10 BE BE164216A patent/BE838428A/en unknown
- 1976-02-13 GB GB5685/76A patent/GB1528414A/en not_active Expired
- 1976-02-16 LU LU74355A patent/LU74355A1/xx unknown
- 1976-02-16 FR FR7604126A patent/FR2301359A1/en active Granted
- 1976-02-17 NL NL7601598A patent/NL7601598A/en not_active Application Discontinuation
- 1976-02-18 IE IE318/76A patent/IE42483B1/en unknown
- 1976-02-18 DK DK67476*#A patent/DK67476A/en unknown
- 1976-02-18 IT IT20303/76A patent/IT1055333B/en active
Also Published As
| Publication number | Publication date |
|---|---|
| IE42483L (en) | 1976-08-18 |
| IT1055333B (en) | 1981-12-21 |
| DK67476A (en) | 1976-08-19 |
| DE2506881B2 (en) | 1977-03-10 |
| FR2301359A1 (en) | 1976-09-17 |
| BE838428A (en) | 1976-05-28 |
| LU74355A1 (en) | 1976-08-13 |
| FR2301359B1 (en) | 1981-04-10 |
| DE2506881A1 (en) | 1976-08-26 |
| GB1528414A (en) | 1978-10-11 |
| NL7601598A (en) | 1976-08-20 |
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