DE2028017A1 - Ultrasonic welding composite sheet - with outer layers compacted to assist inward transmission of vibrations - Google Patents

Ultrasonic welding composite sheet - with outer layers compacted to assist inward transmission of vibrations

Info

Publication number
DE2028017A1
DE2028017A1 DE19702028017 DE2028017A DE2028017A1 DE 2028017 A1 DE2028017 A1 DE 2028017A1 DE 19702028017 DE19702028017 DE 19702028017 DE 2028017 A DE2028017 A DE 2028017A DE 2028017 A1 DE2028017 A1 DE 2028017A1
Authority
DE
Germany
Prior art keywords
ultrasonic welding
vibrations
ultrasonic
welding
thermoreactive
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
Application number
DE19702028017
Other languages
German (de)
Inventor
Leonid Ewseewitsch; Wigderman Wolf Schlemowitsch; Mytarew Walery Konstantinowitsch; Nikischin Nikolai Iwanowitsc Moskau. M Zschelesnyak
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
VNI I EXPERIMEN
Original Assignee
VNI I EXPERIMEN
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to CH788670A priority Critical patent/CH523131A/en
Application filed by VNI I EXPERIMEN filed Critical VNI I EXPERIMEN
Priority to DE19702028017 priority patent/DE2028017A1/en
Publication of DE2028017A1 publication Critical patent/DE2028017A1/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
    • B29C65/083—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations using a rotary sonotrode or a rotary anvil
    • B29C65/086—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations using a rotary sonotrode or a rotary anvil using a rotary anvil
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/0008—Electrical discharge treatment, e.g. corona, plasma treatment; wave energy or particle radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
    • B29C66/022—Mechanical pre-treatments, e.g. reshaping
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8341—Roller, cylinder or drum types; Band or belt types; Ball types
    • B29C66/83411—Roller, cylinder or drum types
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8341—Roller, cylinder or drum types; Band or belt types; Ball types
    • B29C66/83411—Roller, cylinder or drum types
    • B29C66/83413—Roller, cylinder or drum types cooperating rollers, cylinders or drums
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/10—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of paper or cardboard
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/10—Applying or generating heat or pressure or combinations thereof
    • B65B51/22—Applying or generating heat or pressure or combinations thereof by friction or ultrasonic or high-frequency electrical means, i.e. by friction or ultrasonic or induction welding
    • B65B51/225—Applying or generating heat or pressure or combinations thereof by friction or ultrasonic or high-frequency electrical means, i.e. by friction or ultrasonic or induction welding by ultrasonic welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
    • B29C66/7232—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer
    • B29C66/72327—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer consisting of natural products or their composites, not provided for in B29C66/72321 - B29C66/72324
    • B29C66/72328—Paper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2711/00—Use of natural products or their composites, not provided for in groups B29K2601/00 - B29K2709/00, for preformed parts, e.g. for inserts
    • B29K2711/12—Paper, e.g. cardboard
    • B29K2711/123—Coated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2310/00—Treatment by energy or chemical effects
    • B32B2310/028—Treatment by energy or chemical effects using vibration, e.g. sonic or ultrasonic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2323/00—Polyalkenes
    • B32B2323/04—Polyethylene

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Thermal Sciences (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

An ultrasonic welding method for composite materials where the outer layer is a thermoreactive sheet and the inner layer a thermoplastic which softens under ultrasonic vibrations, is carried out with previous compacting of the outer layer or layers along the line of the weld before the weld is made. This improves the inward transmission of the vibrations to the thermoplastic layers. The system is esp. applicable to packaging material for foodstuffs, comprising external cardboard or similar layers with internal polyethylene sheet.

Description

VERFAHREN ZUM ULTRASCHALLSCHWEISEN VON KOMBINIERTEN WERSTOFFEN Die Erfindung betrifft Verfahren zum Ultraschallschweißen kombinierter Werkstoffe, bei denen die Außenschicht aus härtbarem und die innere aus polymerem thermoplastischem Werkstoff vom Typ Pappe-Polyäthalen besteht, und ist vorzugsweise zur Verpackung von Nahrungsmitteln bestimmt.PROCESS FOR ULTRASONIC WELDING OF COMBINED MATERIALS The The invention relates to methods for ultrasonic welding of combined materials the outer layer of curable and the inner layer of polymeric thermoplastic Material of the cardboard-polyethene type is made, and is preferably used for packaging determined by food.

Bekannt ist ein Verfahren zum Ultraschallschweißen von polymeren und kombinierten Werkstoffen, z03.'von Polyäthylen oder polyäthylenbeschichtetem Papier, das darin besteht, daß das Ultraschallschweßgerät Ultraschallschwingungen auf die Oberfläche der zu verschweißenden Werkstoffe ausstrahlt, die das Erweichen und Verbinden der thermoplastischen Schichten der Werk stoffe an deren Kontaktstelle bewirken, indem sie durch die äußere Werkstoffschicht durchdringen. Die Güte der Schweißnaht ist jedoch beim Ultraschallschweißen von kombinierten Werkstoffen, z.B. vom Typ Pappe mit olyäthylenschicht, Pappe- Polyäthylenfoile ungenügend, da die Pappenstruktur geringe Ultraschalleitfähigkeit anfweist.A method for ultrasonic welding of polymers and combined materials, e.g. of polyethylene or polyethylene-coated paper, that consists in that the ultrasonic welding device ultrasonic vibrations on the The surface of the materials to be welded emits that the softening and Connect the thermoplastic layers of the materials at their contact point effect by penetrating through the outer layer of material. The goodness of the However, a weld seam is necessary in the case of ultrasonic welding of combined materials, e.g. of the type cardboard with olyäthylenschicht, Pappe-Polyäthylenfoile insufficient, since the Cardboard structure indicates low ultrasonic conductivity.

Zweck der vorliegenden Erfindung ist die Entwicklung eines Verfahrens, das es ermölicht, beim Ultraschallschweißen von kombinierten Werkstoffen vom bp Pappe mit Polyäthylenschicht Schweißnähte hoher Güte zu erhalten. The purpose of the present invention is to develop a method which enables the ultrasonic welding of combined materials from the bp Cardboard with a polyethylene layer to obtain high quality welds.

Zur Lösung der gestellten Aufgabe wird ein Verfahren zum Ultraschallschweißen kombinierter Werkstoffe vorgeschlagen, bei denen die Außenschicht thermoreaktiver und die Innenschicht polymerer thermoplastischer Werkstoff ist, bei dessen Aufweichen unter dem Einfuß von Ultraschallschwingungen während des Schweißens die Verbindung des Werkstoffes erfolgt. A method for ultrasonic welding is used to solve the problem Combined materials are proposed in which the outer layer is more thermoreactive and the inner layer is polymeric thermoplastic material upon which it is softened the connection under the influence of ultrasonic vibrations during welding of the material takes place.

Das Verfahren kennzeichnet sich dadurch, daß man vor dem Schweißen die dem Ultraschallkopf zugewandte thermoplastische Werkstoffschicht längs der künftigen Naht verdichtet.The method is characterized in that one prior to welding the thermoplastic material layer facing the ultrasound head along the future Seam compacted.

Bei der konkreten Ausführung kann man das Verfahren wie obenerwähnt anwenden, das sich dadurch kennzeichnet, daß man vor dem Schweißen eine Verdichtung des thermoreaktiven Werk Stoffes von beiden Seiten der künftigen Naht durchführt. In the concrete implementation, the method as mentioned above can be used apply, which is characterized by the fact that one compression before welding of the thermoreactive work fabric from both sides of the future seam.

Gemäß dem vorliegenden Verfahren wird die Verdichtung des thermoreaktiven Werketoffes so lange fortgesetzt, bis sich längs der künftigen Naht eine Rille bildet. According to the present method, the compaction of the thermoreactive Werketoffes continued until along the future seam forms a groove.

Zur Verdichtung werden bei dem vorliegenden Verfahren Klemmrollen angewandt. In the present method, pinch rollers are used for compaction applied.

Die vorliegende Erfindung gestattet es, die Übertragang der Ultraschallenergie an die Stelle der zu verschweißenden Flächen zu verbessern und somit eine feste hweißnaht zu erhalten. Das erfindungsgemäße Verfahren erweitert die Anwendungsmöglichkeiten des Werkstoffes vom Typ Pappe Polyäthylen bei der Verpackung. The present invention permits the transmission of ultrasonic energy to improve the place of the surfaces to be welded and thus a solid to maintain a weld seam. The method according to the invention extends the application possibilities of the material of the cardboard type polyethylene in the packaging.

Nachstehend soll die Erfindung durch Zeichnungen näher erläutert werden. Es zeigt Fig. 1 Schema einer der Ausführungsvarianten der technologischen Arbeitsgänge zur Realisierung des vorgeschlagenen Verfahrens (für die ununtrebrochene Ultraschallschweißung) Fig. 2 Schnitt II-II der Fig. 1; Fig. 3 schnitt III-III der Fig. 1. The invention is explained in more detail below by means of drawings will. It shows Fig. 1 Scheme of one of the design variants of the technological Operations to implement the proposed method (for the continuous Ultrasonic welding) Fig. 2 section II-II of Fig. 1; Fig. 3 section III-III of Fig. 1.

Der Schweißwerkstoff, der eine mit einer Polyäthylenschicht 2 und 2a bedeckte Pappe 1 und la (Fig. 1,2,3) darstellt, wird zwischen den Rollen 3 und 3a sowie zwischen dem Ultraschallkopf 4 und der Rolle 5 untergebracht, die in diesem Fall als Amboß dient. The welding material, the one with a polyethylene layer 2 and 2a covered cardboard 1 and la (Fig. 1,2,3) is between the rollers 3 and 3a and housed between the ultrasound head 4 and the roller 5 in this Case serves as an anvil.

Die Rollen 3, 3a und 5 können sich um die horizontalen Achsen drehen. Die Achsen der Rollen 3 und 5 sind in der senkrechten Ebene unbeweglicbngeordnet, während sich die Achse der Rolle 3a in der senkrechten Ebene bewegen kann, An die Achse der Rolle 3a wird eine Kraft angelegt, die die letztere an den Schweißwerkstoff andrückt und den nötigen Verdichtungsdruck ausübt, der auf der Pappe eine Rille entlang der künftigen Naht bildet. The rollers 3, 3a and 5 can rotate about the horizontal axes. The axes of rollers 3 and 5 are immovable in the vertical plane, while the axis of the roller 3a can move in the vertical plane, At a force is applied to the axis of the roller 3a, the latter to the welding material and exert the necessary compression pressure, which creates a groove on the cardboard along the future seam.

Die Tiefe der Rille wird so gewählt, daß sie optimale Verhältnisse für den Durchgang von Ultraschallsohwingungeii sicherstellt. The depth of the groove is chosen so that it is optimal proportions for the passage of ultrasonic oscillations egg.

Während des Ultraschallschweißvorganges wird der Werkstoff von den Rollen 3 und 3a zu der Rolle 5 vorgeschoben. During the ultrasonic welding process, the material is from the Rolls 3 and 3a advanced to roll 5.

Indem der Werkstoff zwischen den Rollen 3 Lind 3a geführt wird, wird dieser verdichtet; dabei bildet sich darin eine Längsrille 6, deren Breite ungefälir gleich der der Rolle ist. Weiter wird der verdichtete Werkstoff 7,7a zwischen der Rolle 5 und dem Ultraschallschweißkopf 4 geführt, geschweißt und tritt als verbundener Werkstoff9' 8a heraus. By the material is guided between the rollers 3 and 3 a this condenses; a longitudinal groove 6 is formed therein, the width of which is approximate is equal to that of the role. Next, the compacted material is 7.7a between the Roller 5 and the ultrasonic welding head 4 is guided, welded and occurs as a connected Material 9 '8a out.

Claims (4)

PATENTASPRÜCHE: PATENT CLAIMS: Verfahren zum Ultraschallschweißen von kombinierten Werwstoffen, bei denen die Außenschicht einen therinoreaktiven und die Innenschicht einen polymeren thermoplastischen Werkstoff darstellt, bei dessen Erweichung unter dem Einfluß von Ultrasohallschwingungen während des Schweißens der Werkstoff verbunden wird, d a d u r c h g e k e n nz e i c h n e t, daß man vor dem Schweißen den dem Ultraschallkopf (4) zugewandten thermoreaktiven Werkstoff (1 und la) entlang der künftigen Schweißnaht verdichtet. Process for ultrasonic welding of combined materials, in which the outer layer is thermally reactive and the inner layer is polymeric represents thermoplastic material, its softening under the influence of Ultrasonic vibrations during welding of the material is connected, d a It is noted that the ultrasonic head must be used before welding (4) facing thermoreactive material (1 and la) along the future weld seam condensed. 2. Verfahren nach Anspruch 1 d a du r c h g ek e n n z e i e h n e t, daß man vor dem Schweißen den thermoreaktiven Werkstoff (1 und la) entlang der künftigen Schweißnaht von beiden Seiten verdichtet. 2. The method according to claim 1 d a du r c h g ek e n n z e i e h n e t that before welding the thermoreactive material (1 and la) along the future weld seam compacted from both sides. 3. Verfahren nach Anspruch 1, 2 d a d u r c h g ek e n fl z e i e h n e t, daß man die Verdichtung des thermoreaktiven Werkstoffes (1 und la) bis zurw Bildung einen Ril le (6) entlang der künftigen Schweißnaht durchführt. 3. The method according to claim 1, 2 d a d u r c h g ek e n fl z e i e h n e t that the compression of the thermoreactive material (1 and la) to zurw formation of a groove (6) along the future weld. 4. Verfahren nach Anspruch 1 d a d u r c h g e k e no z e i c h n e t, daß beim Verdichten des Werkstoffes Druckrollen (3 und 3a) verwendet werden. 4. The method according to claim 1 d a d u r c h g e k e no z e i c h n e t that pressure rollers (3 and 3a) are used when compacting the material. L e e r s e i t eL e r s e i t e
DE19702028017 1970-06-08 1970-06-08 Ultrasonic welding composite sheet - with outer layers compacted to assist inward transmission of vibrations Pending DE2028017A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CH788670A CH523131A (en) 1970-06-08 1970-05-27 Process for ultrasonic welding of laminates
DE19702028017 DE2028017A1 (en) 1970-06-08 1970-06-08 Ultrasonic welding composite sheet - with outer layers compacted to assist inward transmission of vibrations

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702028017 DE2028017A1 (en) 1970-06-08 1970-06-08 Ultrasonic welding composite sheet - with outer layers compacted to assist inward transmission of vibrations

Publications (1)

Publication Number Publication Date
DE2028017A1 true DE2028017A1 (en) 1972-01-27

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Application Number Title Priority Date Filing Date
DE19702028017 Pending DE2028017A1 (en) 1970-06-08 1970-06-08 Ultrasonic welding composite sheet - with outer layers compacted to assist inward transmission of vibrations

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CH (1) CH523131A (en)
DE (1) DE2028017A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3734021A1 (en) * 1987-10-08 1989-04-20 Telefunken Electronic Gmbh Push-button switch
EP0340334A2 (en) * 1988-05-05 1989-11-08 Drescher Geschäftsdrucke Gmbh Apparatus for joining two or multilayered paper articles together
WO1996001180A1 (en) * 1994-07-06 1996-01-18 Fra.Mo Snc Di Franca Riva & C. Sealing of sheet material

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3734021A1 (en) * 1987-10-08 1989-04-20 Telefunken Electronic Gmbh Push-button switch
EP0340334A2 (en) * 1988-05-05 1989-11-08 Drescher Geschäftsdrucke Gmbh Apparatus for joining two or multilayered paper articles together
EP0340334A3 (en) * 1988-05-05 1991-03-06 Drescher Geschäftsdrucke Gmbh Apparatus for joining two or multilayered paper articles together
WO1996001180A1 (en) * 1994-07-06 1996-01-18 Fra.Mo Snc Di Franca Riva & C. Sealing of sheet material

Also Published As

Publication number Publication date
CH523131A (en) 1972-05-31

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