43 Pa. Stat. § 206l
No restraining order or temporary or permanent injunction shall be granted in a case involving or growing out of a labor dispute, except on the basis of findings of fact made and filed by the court in the record of the case prior to the issuance of such restraining order or injunction, and every restraining order or injunction granted in a case involving or growing out of a labor dispute shall include only a prohibition of such specific act or acts as may be expressly complained of in the bill of complaint or petition filed in such case, and as shall be expressly included in said findings of fact made and filed by the court, as provided herein, and shall be binding only upon the parties to the suit, their agents, servants and employes, who shall, by personal service or otherwise, have secured actual notice of the same.
43 P.S. § 206l