Method of forming hollow plastic articles

Claim 3

PROVIDING A CONTINUOUS HOLLOW PREFORM OF PLASTIC MATERIAL IN CONDITION OF PLASTICITY TO PERMIT EXPANSION AND SETTING IN PREDETERMINED FORM,

Claim 4

PROVIDING A CONTINUOUS HOLLOW PREFORM OF PLASTIC MATERIAL IN CONDITION OF PLASTICITY TO PERMIT EXPANSION AND SETTING IN PREDETERMINED FORM,

Claim 5

PLACING A LENGTH OF SAID PREFORM INTO THE SPACE BETWEEN OPEN OPPOSING SECTIONS OF A MOLD, SAID LENGTH HAVING A LONGITUDINAL AXIS, SAID PLACING BEING DONE SO THAT SAID AXIS EXTENDS VERTICALLY, SAID MOLD DEFINING, WHEN CLOSED, A CAVITY CONFORMING IN SHAPE TO THE ARTICLE TO BE FORMED.

Claim 6

PLACING A LENGTH OF SAID PREFORM INTO THE SPACE BETWEEN OPEN OPPOSING SECTIONS OF A MOLD, SAID LENGTH HAVING A LONGITUDINAL AXIS, SAID PLACING BEING DONE SO THAT SAID AXIS EXTENDS VERTICALLY, SAID MOLD DEFINING, WHEN CLOSED, A CAVITY CONFORMING IN SHAPE TO THE ARTICLE TO BE FORMED.

Claim 7

CLOSING THE OPEN MOLD, THEREBY FORMING AN INFLATABLE EMBRYO ARTICLE WITHIN THE CLOSED MOLD,

Claim 8

CLOSING THE OPEN MOLD, THEREBY FORMING AN INFLATABLE EMBRYO ARTICLE WITHIN THE CLOSED MOLD,

Claim 9

ADMITTING A FLUID PRESSURE MEDIUM TO SAID EMBYO ARTICLE, THEREBY EXPANDING SAID EMBRYO ARTICLE INTO MOLDING CONTACT WITH SAID CAVITY,

Claim 10

ADMITTING A FLUID PRESSURE MEDIUM TO SAID EMBYO ARTICLE, THEREBY EXPANDING SAID EMBRYO ARTICLE INTO MOLDING CONTACT WITH SAID CAVITY,

Claim 11

OPENING THE CLOSED MOLD AT A TIME WHEN THE EXPANDED OR BLOWN ARTICLE HAS REACHED A SELF-SUPPORTING BUT STILL INCOMPLETELY SOLIDIFIED STATE, THE INCOMPLETELY SOLIDIFIED ARTICLE HAVING AN AXIS COINCIDING WITH SAID FIRST NAMED AXIS,

Claim 12

OPENING THE CLOSED MOLD AT A TIME WHEN THE EXPANDED OR BLOWN ARTICLE HAS REACHED A SELF-SUPPORTING BUT STILL INCOMPLETELY SOLIDIFIED STATE, THE INCOMPLETELY SOLIDIFIED ARTICLE HAVING AN AXIS COINCIDING WITH SAID FIRST NAMED AXIS,

Claim 13

HAVING SAID INCOMPLETELY SOLIFIEDARTICLE SUPPORTED BY A FIRST CORE, WITHDRAWING SAID FIRST CORE TOGETHER WITH SAID INCOMPLETELY SOLIDIFIED ARTICLE FROM THE OPEN MOLD, THE AXIS OF SAID INCOMPLETELY SOLIFIDIED ARTICLE MOVING DURING SAID WITHDRAWING PARALLEL TO ITSELF AND, THUS, REMAINING VERTICAL,

Claim 14

HAVING SAID INCOMPLETELY SOLIFIEDARTICLE SUPPORTED BY A FIRST CORE, WITHDRAWING SAID FIRST CORE TOGETHER WITH SAID INCOMPLETELY SOLIDIFIED ARTICLE FROM THE OPEN MOLD, THE AXIS OF SAID INCOMPLETELY SOLIFIDIED ARTICLE MOVING DURING SAID WITHDRAWING PARALLEL TO ITSELF AND, THUS, REMAINING VERTICAL,

Claim 15

ALLOWING THE WITHDRAWN INCOMPLETELY SOLIDIFIED ARTICLE TO SOLIDIFY TO COMPLETION IN VERTICAL CONDITION OUTSIDE THE MOLD,

Claim 16

ALLOWING THE WITHDRAWN INCOMPLETELY SOLIDIFIED ARTICLE TO SOLIDIFY TO COMPLETION IN VERTICAL CONDITION OUTSIDE THE MOLD,

Claim 17

PLACING A FRESH LENGTH OF SAID PREFORM INTO THE OPEN MOLD, REPEATING THE STEPS LEADING TO THE CONVERSION OF SAID FRESH LENGTH OVER A FRESH EMBRYO ARTICLE INTO A FRESHLY BLOWN INCOMPLETELY SOLIDIFIED ARTICLE AND TO THE COMPLETION OF THE SOLIDICATION OF SAID FRESH INCOMPLETELY SOLIDIFIED ARTICLE, THEREBY HAVING SAID FRESH INCOMPLETELY SOLIDIFIED ARTICLE SUPPORTED BY A SECOND CORE, AND

Claim 18

PLACING A FRESH LENGTH OF SAID PREFORM INTO THE OPEN MOLD, REPEATING THE STEPS LEADING TO THE CONVERSION OF SAID FRESH LENGTH OVER A FRESH EMBRYO ARTICLE INTO A FRESHLY BLOWN INCOMPLETELY SOLIDIFIED ARTICLE AND TO THE COMPLETION OF THE SOLIDICATION OF SAID FRESH INCOMPLETELY SOLIDIFIED ARTICLE, THEREBY HAVING SAID FRESH INCOMPLETELY SOLIDIFIED ARTICLE SUPPORTED BY A SECOND CORE, AND

Claim 19

TAKING A COMPLETELY SOLIDIFIED ARTICLE OFF SAID FIRST CORE.

Claim 20

TAKING A COMPLETELY SOLIDIFIED ARTICLE OFF SAID FIRST CORE.